I posted a question in the beginning and intermediate imaging forum and I was advised to ask here.
I'm primarily a DSO imager and a new one at that. But I would like to take some baby steps into planetary and lunar imaging using the equipment I already have.
I have an ES 127ED APO with a 2.5" focuser with 2" opening. I have an ASI1600MM camera but I understand my ASI290MM Mini would be the better choice for planetary.
My questions are:
1) How does the barlow lens fit into the imaging train? From the other thread I gather it slips into the focuser on one end and threads onto the camera at the other. Seeing that I would be using the ASI290 which is 1.25", I assume I would need a 1.25" barlow? If so, does that fit into the 2" barrel opening by using a 2" to 1.25" adapter? Would this work? https://www.highpoin...nch-adapter-fad
2) Would the 1.25" barlow be the right choice or a 2"?
3) Finally, for this scope (f/7.5) and camera combination would you recommend a 2x or 3x barlow?
I realize my scope and camera are not the appropriate tools for planetary imaging. But I would like to just get my feet wet a little using the gear I already have. Thanks for any help you can provide!